An apparatus and method for occluding a lumen, such as a vessel, in a mammal using alternating current and monitoring reflected power from the occlusion site to determine vessel constriction and/or electrocoagulation. The apparatus is provided with an alternating current (AC) power generator, a first...http://www.google.com.tw/patents/US6019757?utm_source=gb-gplus-share專利 US6019757 - Endoluminal electro-occlusion detection apparatus and method
